Boleite was to start with identified in Boleo, Mexico in 1891, inside a region of your Baja peninsula that happens to be renowned for unusual minerals. Boleite is this sort of an unusual and sophisticated mineral that the definition of its chemical composition and crystal structure have been through various revisions due to the fact its 1st discovery.
The initial specimens of boleite had been found out by Eduoard Cumenge, a French mining engineer. A different unusual halide mineral in the same locale, with the same construction and a rather diverse chemical composition, was named cumengite in honor of Cumenge.
There are lots of attributes of boleite which make it of unique curiosity to collectors. For another thing, it's an unusual chemical composition, remaining a hydrated direct copper silver chloride hydroxide. It consists of sizeable quantities of such metals, with about forty nine% direct, fourteen% copper and 9% silver. Next, it's a fascinating crystal composition, due to the fact boleite is always pseudocubically twinned. That is, Just about Δαχτυλιδια Γυναικεια every cube-like crystal of boleite is in fact composed of a few rectangular box-like crystals oriented at right angles to one another. Boleite also has an incredibly appealing indigo coloration and many Δαχτυλιδια Γυναικεια extremely exceptional transparent crystals are actually Lower as gemstones.
Boleite in MatrixBoleite in Matrix
Like Δαχτυλιδια Φθηνα other halide minerals, such as fluorite, boleite is kind of soft, that ΧÏυσά Δαχτυλίδια has a Mohs hardness rating of only 3 to three.5. It's got a vitreous to pearly luster. It's an unusually dense mineral, with a certain gravity of 5.05. Just a few minerals, which include hematite and cassiterite, have a better density. Boleite's refractive index is usually really superior at 2.03-2.05; bigger than sapphire, sphene and demantoid garnet.
Together with cumengite, There are a selection of other minerals connected with boleite, together with pseudoboleite, chloroxiphite, paralaurionite, matlockite, chlorargyrite, bideauxite, atacamite, mendipite and diaboleite.
Along with the Δαχτυλιδια Φθηνα deposit in Baja, Mexico, boleite has actually been found in Broken Hill in New South Wales, Australia; during the Mammoth District of Arizona in The us; and from the Mendip Hills of Somerset, England.
